My Top Ten fav features (not nessicarily in order) :
1: The ability to promote people and recruit people for your guild when you are high ranking. That would rock. (especially if you could recruit guards for the mage guild lol)
2: The Script Effect thingy. I wanna make a spell to make an enemy attack all his mates! If I can do that. Or at least make them sleeeepy... so very sleeeeepy... lol.
Anyway.
3: Yielding. Now you can actually fight someone without having to kill them!
The closest thing to that in Morrowind was that wierd Hrolfgar The Strange from Bloodmoon.
4: Traps! I love traps! Traps are one of the main reasons I brought Evil Genius!
5: Horse Riding! W00tage!
6: The way you can knock people off cliffs! Yay for Physics!
7: Magic. 'Nuff said.
8: Now you can actually do a jailbreak! Instead of just basically being teleported outside a prison with some skills gone down.
9: PARALYSE! Who wouldn't love paralyse! Paralyse + Physics + Cliff/Stairs/Step = Hilarity!
10: Last but not least, NO MORE BLOODY CLIFF RACERS!